A vehicular side view minor includes a minor seat having an engagement portion. A light-impermeable first annular wall protrudes rearwards from an inner periphery of a through-hole in the engagement portion. A minor is mounted in front of the minor seat and includes a reflective layer. A light-permeable housing is mounted to the engagement portion and has a second annular wall extending through the first annular wall. A front wall of the second annular wall includes an optical lens portion. A circuit board is received in the housing and has a lighting element. The circuit board includes a periphery abutting an abutment portion of the second annular wall. A gluing material is filled in a gluing space behind the circuit board and sealingly covers a rear surface of the circuit board, front sections of two wires, and a portion of the second annular wall to form a sealing portion.